SCDP, Bayan Mandahu [non-specific locality data] (Cretaceous of China)

Also known as Magnirostris holotype, Machairasaurus holotype

Where: Nei Mongol, China (41.7° N, 106.8° E: paleocoordinates 39.5° N, 96.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bayan Mandahu Formation, Campanian (83.6 - 72.1 Ma)

• bed-level stratigraphic resolution

Environment/lithology: dune; sandstone

• The sediments at Bayan Mandahu consist of fine sands, mudstones and caliches. These sediments are interpreted as being deposited between a mountain range and an active dune field (Eberth 1993; Jerzykiewicz et al. 1993), by streams, ponds and dunes. Overall, the facies closely resemble those found at Bayn Dzak

Size class: macrofossils

Collected by Sino-Canadian Dinosaur Project (SCDP) in 1988, 1990; reposited in the IVPP

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: H. You and Z. Dong. 2003. A new protoceratopsid (Dinosauria: Neoceratopsia) from the Late Cretaceous of Inner Mongolia, China. Acta Geologica Sinica 77(3):299-303 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 94372: authorized by Richard Butler, entered by Richard Butler on 18.02.2010, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

 Avetheropoda - Oviraptoridae
Machairasaurus leptonychus n. gen. n. sp. Longrich et al. 2010 coelurosaur
IVPP V15979, partial skeleton incl. nearly complete articulated R forearm & manus, fragments of L manus & pedal phalanges; IVPP V15980, partial skeleton incl. manual & pedal phalanges, fragments of L metatarsals III & IV, caudal vertebrae, dorsal ribs & chevrons
 Neornithischia - Protoceratopsidae
Magnirostris dodsoni You and Dong 2003 ornithischian
IVPP V 12513, almost complete skull